Improvement in the manufacture of illuminating-gas



' UNITED STATES PATENT OFFICE.

W. H. GWYNNE, OF WHITE PLAINS, NEW YORK.

IMPROVEMENT IN THE MANUFACTURE OF lLLUMlNATlNG-GAS.

Specification forming part of Letters Patent No. 37,289, dated January 6, 1863. v

To all whom it may concern:

Be it known that I, WILLIAM H. GWYNNE, of White Plains, Westchester county, in the State of New York, have invented a certain new and useful Improvement in the Manufacture of Illuminating-Gas and I do hereby declare that the following is a full and correct description thereof.

In carrying out my invention I use ordinary clay oriron gas-retorts with stand-pipe in front, such as are used in the manufacture of coal-gas.

My said invention consists in obtaining illuminating-gas from wood and highly-charged bituminous coal, as follows, viz:

I place the coal in the back part of a gas-retort heated up to a gas-making temperature, and then place the wood in the retort in front of the coal, and close and lute the retort and keep up the heat until both wood and coal are decomposed.

In the operation the richer gases and vapors from the coal at the back part of the retort are acted upon by the hot sides of the retort as they pass forward to the stand-pipein the front of the retort, and also take up and are hydrogenized by the gases from the wood, forming an illuminating-gas of superior quality and free from many of the objectionable'matters of rich coal-gas.

The coal I prefer is highly-charged bituminous coal-such as the Albert or the Breckenridge coal-in proportions of about thirty pounds of coal to one hundred pounds of wood, which latter may be of any description used in the manufacture of illuminating-gas.

I claim Obtaining illuminating-gas from coal and wood placed togetherin a retort, in manner and proportions and treated substantially as described.

W. H. GW YNN E. Witnesses:

WILLIAM ArCOLLINS, HENRY BALDWIN, Jr. 

